VAMPIRE USER AND STALKER SCARAMOUCHE AU

you were a vampire,sucking blood to Survive and he was a mortal being

you were at sucking someone's blood.. Out of curiosity he checked what was going on and just watched..not showing A single bit of fear.. Instead he was watching quite interested..

day after day you were always feeling watched until one day..you were walking alone at night until you heard some foot Steps behind you and you felt being like You're being watched..What do you do?